不同類型的工程施工選用不同用途的移動腳手架和模板支架。目前，橋梁支撐架使用碗扣腳手架的居多，也有使用門式腳手架的。主體結構施工落地腳手架使用扣件腳手架的居多，移動腳手架立桿的縱距一般為1.2~1.8m；橫距一般為0.9~1.5m。扣件式鋼管腳手1：優點 1) 承載力較大。當移動腳手架的幾何尺寸及構造符合規范的有關要求時，一般情況下，移動腳手架的單管立柱的承載力可達15kN～35kN(1．5tf～3．5tf，設計值)。 2)裝拆方便，搭設靈活。由于鋼管長度易于調整，扣件連接簡便，因而可適應各種平面、立面的建筑物與構筑物用門式腳手架。 3)比較經濟。加工簡單，一次投資費用較低；如果精心設計門式腳手架幾何尺寸，注意提高鋼管周轉使用率，則材料用量也可取得較好的經濟效果。扣件鋼管架折合每平方米建筑用鋼量約15公斤。
Scaffolds and formwork supports are chosen for different types of engineering construction. At present, most of the bridge support frames are bowl buckles and scaffolding. In the construction of main structure, fastener scaffolding is mostly used. The longitudinal distance of scaffolding poles is generally 1.2-1.8 m, and the transverse distance is generally 0.9-1.5 M. Fastener type steel pipe foot 1: advantages 1) large bearing capacity. When the scaffolding geometry and structure meet the relevant requirements of the code, in general, the bearing capacity of the scaffolding single pipe column can reach 15 kN-35 kN (1.5 tf-3.5 tf, design value). 2) easy installation and installation. Because the length of steel pipe is easy to adjust and the connection of fasteners is simple, it can be used in scaffolding of buildings and structures with various planes and elevations. 3) Comparative economy. The processing is simple and the cost of one-time investment is low. If the scaffolding geometry size is carefully designed and the turnover utilization rate of steel pipe is improved, the material consumption can also achieve better economic results. The steel pipe rack of the fastener is equivalent to 15 kilograms of steel per square metre.
2：缺點 1)扣件(特別是它的螺桿)容易丟失； 2)節點處的桿件為偏心連接，靠抗滑力傳遞荷載和內力，因而降低了其承載能力； 3)扣件節點的連接質量受扣件本身質量和工人操作的影響顯著。
2: Disadvantage 1) Fasteners (especially its screw) are easily lost; 2) the rods at the joints are eccentrically connected, which transfer loads and internal forces by anti-sliding force, thus reducing their bearing capacity; 3) the quality of the connection of fastener joints is significantly affected by the quality of fasteners themselves and the operation of workers.
3: Adaptability 1) Constructing various forms of scaffolding, formwork and other support frames; 2) assembling derrick; 3) erecting ramps, shed, stand and other temporary structures; 4) assisting other kinds of scaffolding to strengthen poles; 門式鋼管腳手架
Portal steel pipe scaffold
1：優點 1)門式鋼管腳手架幾何尺寸標準化。 2)結構合理，受力性能好，充分利用利用鋼材強度，承載能力高。 3)施工中裝拆容易、架設效率高，省工省時、安全可靠、經濟適用。
1: advantage 1) standardization of portal steel tube scaffold geometry. 2) reasonable structure and good mechanical performance, making full use of steel strength and high carrying capacity. 3) construction is easy to install and disassemble, high efficiency, labor saving, time saving, safe and reliable, economical and applicable.
2：缺點 1)構架尺寸無任何靈活性，構架尺寸的任何改變都要換用另一種型號的門架及其配件 2)交叉支撐易在中鉸點處折斷； 3)定型腳手板較重， 4)價格較貴 門式鋼管腳手架
2: Disadvantage 1) There is no flexibility in the size of the frame. Any change in the size of the frame should be replaced by another type of gantry and its fittings 2) The cross support is easy to break at the mid-hinge point; 3) the stereotyped scaffold is heavier; 4) the price is higher than the expensive gantry steel tube scaffold.
3：適應性 1)構造定型腳手架 2)作粱、板構架的支撐架(承受豎向荷載)； 3)構造活動工作臺；
3: Adaptability 1) Structural stereotyped scaffolding 2) as the support of sorghum and slab frame (bearing vertical load); 3) tectonic active workbench;
Bowl buckle steel pipe scaffold
1：優點 1)多功能：能根據具體施工要求，組成不同組架尺寸、形狀和承載能力的單、雙排腳手架，支撐架，支撐柱，物料提升架，爬升腳手架，懸挑架等多種功能的施工裝備。也可用于搭設施工棚、料棚、燈塔等構筑物。特別適合于搭設曲面腳手架和重載支撐架。 2)高功效：常用桿件中最長為3130mm，重17.07kg。整架拼拆速度比常規快3～5倍，拼拆快速省力，工人用一把鐵錘即可完成全部作業，避免了螺栓操作帶來的諸多不便。 3)通用性強：主構件均采用普通的扣件式鋼管腳手架之鋼管，可用扣件同普通鋼管連接，通用性強。 4)承載力大：立桿連接是同軸心承插，橫桿同立桿靠碗扣接頭連接，接頭具有可靠的抗彎、抗剪、抗扭力學性能。而且各桿件軸心線交于一點，節點在框架平面內，因此，結構穩固可靠，承載力大。（整架承載力提高，約比同等清況的扣件式鋼管腳手架提高15％以上，） 5)安全可靠：接頭設計時，考慮到上碗扣螺旋摩擦力和自重力作用，使接頭具有可靠的自鎖能力。作用于橫桿上的荷載通過下碗扣傳遞給立桿，下碗扣具有很強的抗剪能力(最大為199kN)。上碗扣即使沒被壓緊，橫桿接頭也不致脫出而造成事故。同時配備有安全網支架，間橫桿，腳手板，擋腳板，架梯。挑粱．連墻撐等桿配件，使用安全可靠。 6)易于加工：主構件用Φ48×3.5、Q 235焊接鋼管，制造工藝簡單，成本適中，可直接對現有扣件式腳手架進行加工改造．不需要復雜的加工設備。 7)不易丟失：該腳手架無零散易丟失扣件，把構件丟失減少到最小程度。 8)維修少：該腳手架構件消除了螺栓連接．構件經碰耐磕．一般銹蝕不影響拼拆作業，不需特殊養護、維修。 9)便于管理：構件系列標準化，構件外表涂以橘黃色。美觀大方，構件堆放整齊，便于現場材料管理，滿足文明施工要求。 10)易于運輸：該腳手架最長構件3130mtm，最重構件40.53kg，便于搬運和運輸。
1: Advantages 1) Multi-function: According to the specific construction requirements, can form different groups of scaffolds size, shape and carrying capacity of single and double row scaffolds, support frame, support column, material lifting frame, climbing scaffolds, suspension and other functions of construction equipment. It can also be used to build structures such as construction shed, material shed, lighthouse and so on. It is especially suitable for erection of curved scaffolds and heavy load supporting frames. 2) high efficiency: the most commonly used rods are 3130mm and 17.07kg. The whole assembly speed is 3-5 times faster than that of the conventional one. The assembly is fast and labor-saving. The worker can complete the whole operation with a hammer, which avoids many inconveniences caused by bolt operation. 3) Strong versatility: the main components are steel tubes of ordinary fastener type steel tube scaffolding, which can be connected with ordinary steel tubes by fasteners, and have strong versatility. 4) High bearing capacity: vertical pole connection is coaxial socket, horizontal pole and vertical pole are connected by bowl-fastened joint, which has reliable bending, shear and torsional mechanical properties. Moreover, the axes of each member intersect at a point, and the joints are in the frame plane. Therefore, the structure is stable and reliable, and the bearing capacity is large. (The bearing capacity of the whole frame is increased, about 15% higher than that of fastener-type steel tube scaffolding in the same clean condition,) 5) Safety and reliability: When designing the joint, considering the screw friction and self-gravity of the upper bowl buckle, the joint has reliable self-locking ability. The load acting on the cross bar is transferred to the vertical bar through the lower bowl buckle, which has a strong shear resistance (the maximum is 199kN). Even if the bowl buckle is not pressed, the cross bar joint will not break out and cause an accident. At the same time, it is equipped with safety net support, cross bar, footboard, foot rest and scaffolding. It is safe and reliable. 6) Easy to process: The main components are welded steel pipes 48*3.5 and Q 235. The manufacturing process is simple and the cost is moderate. The existing fastener-type scaffolding can be directly processed and transformed without complicated processing equipment. 7) it is not easy to lose: the scaffold has no scattered and easily lost fasteners, and the loss of components is reduced to a minimum. 8) Less maintenance: The scaffold structure eliminates the bolt connection. Components are resistant to bumping. Normally, rust does not affect the assembly operation and does not require special maintenance and maintenance. 9) easy to manage: component series is standardized, and the exterior of the component is coated with orange. It is beautiful and generous, and the components are stacked neatly, which is convenient for on-site material management and meets the requirements of civilized construction. 10) easy to transport: the longest component 3130mtm of the scaffold, the most reconstructed part 40.53kg, is convenient for handling and transportation.
2：缺點 1)橫桿為幾種尺寸的定型桿，立桿上碗扣節點按0.6m間距設置，使構架尺寸受到限制； 2)U形連接銷易丟； 3)階格較貴； 3.3.3適應性 1)構筑各種形式的腳手架、模板和其它支撐架； 2)組裝井字架； 3)搭設坡道、工棚、看臺及其它臨時構筑物； 4)構造強力組合支撐柱； 5)構筑承受橫向力作用的支撐架；
2: Disadvantages: 1) The cross bar is a fixed bar of several sizes, and the bowl-and-buckle joints on the vertical pole are set at 0.6 m spacing, which limits the size of the frame; 2) the U-shaped connecting pins are easy to lose; 3) the stairs are expensive; 3.3.3 adaptability: 1) the construction of scaffolding, formwork and other supporting frames of various forms; 2) the assembly of derricks; 3) the erection of ramps, shed and stand. And other temporary structures; 4) Strong composite support columns; 5) Structural support frame bearing transverse force;
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